Electromagnetic wave absorbing properties of Ni-Zn ferrite powder–epoxy composites in GHz range
•The EM wave absorbing properties of Ni-Zn ferrite–epoxy composites in the GHz range were studied.•The EM absorbing properties can be modulated by the grain size and the composition of the ferrites.•Ni-Zn ferrite–resin composites are promising GHz range EM wave absorber. Spinel ferrites NixZn1-xFe2O...
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| Veröffentlicht in: | Journal of magnetism and magnetic materials 2020-11, Vol.513, p.167075, Article 167075 |
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| container_title | Journal of magnetism and magnetic materials |
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| creator | Yoo, Ji-Eun Kang, Young-Min |
| description | •The EM wave absorbing properties of Ni-Zn ferrite–epoxy composites in the GHz range were studied.•The EM absorbing properties can be modulated by the grain size and the composition of the ferrites.•Ni-Zn ferrite–resin composites are promising GHz range EM wave absorber.
Spinel ferrites NixZn1-xFe2O4 (x = 0.4, 0.5, 0.6) with grain sizes ranging from tens of nanometers to several hundred nanometers were prepared using the sol–gel and post-annealing processes. X-ray diffraction (XRD) analysis confirmed that a crystalline single spinel phase could be formed after annealing the sol–gel processed powders at ≥400 °C. Reflection loss (RL) maps as functions of frequency (100 MHz ≤ f ≤ 15 GHz) and sample thickness were plotted for the Ni-Zn ferrite–epoxy (10 wt%) composites. The RL patterns were systematically modulated by the Ni-Zn ferrite grain size and Ni composition x. The electromagnetic wave absorbing area of RL |
| doi_str_mv | 10.1016/j.jmmm.2020.167075 |
| format | Article |
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Spinel ferrites NixZn1-xFe2O4 (x = 0.4, 0.5, 0.6) with grain sizes ranging from tens of nanometers to several hundred nanometers were prepared using the sol–gel and post-annealing processes. X-ray diffraction (XRD) analysis confirmed that a crystalline single spinel phase could be formed after annealing the sol–gel processed powders at ≥400 °C. Reflection loss (RL) maps as functions of frequency (100 MHz ≤ f ≤ 15 GHz) and sample thickness were plotted for the Ni-Zn ferrite–epoxy (10 wt%) composites. The RL patterns were systematically modulated by the Ni-Zn ferrite grain size and Ni composition x. The electromagnetic wave absorbing area of RL < -10 dB enlarged toward the upper left side of the map as the grain size increased, and it also gradually stretched in the upper-left direction as x changed from 0.4 to 0.6. The x = 0.6 sample showed the largest negative RL peak under −60 dB at f = 2.9 GHz with a thickness of 5.6 mm. It also exhibited a very broad-ranged electromagnetic wave absorbing performance with a thickness of 3.1 mm, indicated by RL < -10 dB being satisfied in the frequency range of 4–13 GHz.</description><identifier>ISSN: 0304-8853</identifier><identifier>EISSN: 1873-4766</identifier><identifier>DOI: 10.1016/j.jmmm.2020.167075</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Annealing ; Composite materials ; Electromagnetic radiation ; EM-absorption ; Frequency ranges ; Grain size ; Ni-Zn ferrite ; Permeability ; Permittivity ; Reflection Loss ; Sol-gel processes ; Spinel ; Thickness ; Zinc ferrites</subject><ispartof>Journal of magnetism and magnetic materials, 2020-11, Vol.513, p.167075, Article 167075</ispartof><rights>2020 Elsevier B.V.</rights><rights>Copyright Elsevier BV Nov 1, 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c328t-4a8205b111ec290937e1c9a39a45da8f85d7b97620d46f0ae96fac015f1697d03</citedby><cites>FETCH-LOGICAL-c328t-4a8205b111ec290937e1c9a39a45da8f85d7b97620d46f0ae96fac015f1697d03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0304885320306491$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids></links><search><creatorcontrib>Yoo, Ji-Eun</creatorcontrib><creatorcontrib>Kang, Young-Min</creatorcontrib><title>Electromagnetic wave absorbing properties of Ni-Zn ferrite powder–epoxy composites in GHz range</title><title>Journal of magnetism and magnetic materials</title><description>•The EM wave absorbing properties of Ni-Zn ferrite–epoxy composites in the GHz range were studied.•The EM absorbing properties can be modulated by the grain size and the composition of the ferrites.•Ni-Zn ferrite–resin composites are promising GHz range EM wave absorber.
Spinel ferrites NixZn1-xFe2O4 (x = 0.4, 0.5, 0.6) with grain sizes ranging from tens of nanometers to several hundred nanometers were prepared using the sol–gel and post-annealing processes. X-ray diffraction (XRD) analysis confirmed that a crystalline single spinel phase could be formed after annealing the sol–gel processed powders at ≥400 °C. Reflection loss (RL) maps as functions of frequency (100 MHz ≤ f ≤ 15 GHz) and sample thickness were plotted for the Ni-Zn ferrite–epoxy (10 wt%) composites. The RL patterns were systematically modulated by the Ni-Zn ferrite grain size and Ni composition x. The electromagnetic wave absorbing area of RL < -10 dB enlarged toward the upper left side of the map as the grain size increased, and it also gradually stretched in the upper-left direction as x changed from 0.4 to 0.6. The x = 0.6 sample showed the largest negative RL peak under −60 dB at f = 2.9 GHz with a thickness of 5.6 mm. It also exhibited a very broad-ranged electromagnetic wave absorbing performance with a thickness of 3.1 mm, indicated by RL < -10 dB being satisfied in the frequency range of 4–13 GHz.</description><subject>Annealing</subject><subject>Composite materials</subject><subject>Electromagnetic radiation</subject><subject>EM-absorption</subject><subject>Frequency ranges</subject><subject>Grain size</subject><subject>Ni-Zn ferrite</subject><subject>Permeability</subject><subject>Permittivity</subject><subject>Reflection Loss</subject><subject>Sol-gel processes</subject><subject>Spinel</subject><subject>Thickness</subject><subject>Zinc ferrites</subject><issn>0304-8853</issn><issn>1873-4766</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kE1OwzAQhS0EEuXnAqwssU4ZJ45_JDYIAUWqYAMbNpbrTCpHJA52Wigr7sANOQmpyprVSG_em3n6CDljMGXAxEUzbdq2neaQj4KQIMs9MmFKFhmXQuyTCRTAM6XK4pAcpdQAAONKTIi9eUU3xNDaZYeDd_TdrpHaRQpx4bsl7WPoMQ4eEw01ffDZS0drjNEPSPvwXmH8-frGPnxsqAttH9K4SNR39G72SaPtlnhCDmr7mvD0bx6T59ubp-tZNn-8u7--mmeuyNWQcatyKBeMMXS5Bl1IZE7bQlteVlbVqqzkQkuRQ8VFDRa1qK0DVtZMaFlBcUzOd3fHym8rTINpwip240uTc665UqDl6Mp3LhdDShFr00ff2rgxDMwWpWnMFqXZojQ7lGPochfCsf_aYzTJeewcVj6O9EwV_H_xX7aMflQ</recordid><startdate>20201101</startdate><enddate>20201101</enddate><creator>Yoo, Ji-Eun</creator><creator>Kang, Young-Min</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20201101</creationdate><title>Electromagnetic wave absorbing properties of Ni-Zn ferrite powder–epoxy composites in GHz range</title><author>Yoo, Ji-Eun ; Kang, Young-Min</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c328t-4a8205b111ec290937e1c9a39a45da8f85d7b97620d46f0ae96fac015f1697d03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Annealing</topic><topic>Composite materials</topic><topic>Electromagnetic radiation</topic><topic>EM-absorption</topic><topic>Frequency ranges</topic><topic>Grain size</topic><topic>Ni-Zn ferrite</topic><topic>Permeability</topic><topic>Permittivity</topic><topic>Reflection Loss</topic><topic>Sol-gel processes</topic><topic>Spinel</topic><topic>Thickness</topic><topic>Zinc ferrites</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yoo, Ji-Eun</creatorcontrib><creatorcontrib>Kang, Young-Min</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of magnetism and magnetic materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yoo, Ji-Eun</au><au>Kang, Young-Min</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electromagnetic wave absorbing properties of Ni-Zn ferrite powder–epoxy composites in GHz range</atitle><jtitle>Journal of magnetism and magnetic materials</jtitle><date>2020-11-01</date><risdate>2020</risdate><volume>513</volume><spage>167075</spage><pages>167075-</pages><artnum>167075</artnum><issn>0304-8853</issn><eissn>1873-4766</eissn><abstract>•The EM wave absorbing properties of Ni-Zn ferrite–epoxy composites in the GHz range were studied.•The EM absorbing properties can be modulated by the grain size and the composition of the ferrites.•Ni-Zn ferrite–resin composites are promising GHz range EM wave absorber.
Spinel ferrites NixZn1-xFe2O4 (x = 0.4, 0.5, 0.6) with grain sizes ranging from tens of nanometers to several hundred nanometers were prepared using the sol–gel and post-annealing processes. X-ray diffraction (XRD) analysis confirmed that a crystalline single spinel phase could be formed after annealing the sol–gel processed powders at ≥400 °C. Reflection loss (RL) maps as functions of frequency (100 MHz ≤ f ≤ 15 GHz) and sample thickness were plotted for the Ni-Zn ferrite–epoxy (10 wt%) composites. The RL patterns were systematically modulated by the Ni-Zn ferrite grain size and Ni composition x. The electromagnetic wave absorbing area of RL < -10 dB enlarged toward the upper left side of the map as the grain size increased, and it also gradually stretched in the upper-left direction as x changed from 0.4 to 0.6. The x = 0.6 sample showed the largest negative RL peak under −60 dB at f = 2.9 GHz with a thickness of 5.6 mm. It also exhibited a very broad-ranged electromagnetic wave absorbing performance with a thickness of 3.1 mm, indicated by RL < -10 dB being satisfied in the frequency range of 4–13 GHz.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jmmm.2020.167075</doi></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| subjects | Annealing Composite materials Electromagnetic radiation EM-absorption Frequency ranges Grain size Ni-Zn ferrite Permeability Permittivity Reflection Loss Sol-gel processes Spinel Thickness Zinc ferrites |
| title | Electromagnetic wave absorbing properties of Ni-Zn ferrite powder–epoxy composites in GHz range |
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